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Linux 4.19-rc4
[linux-2.6/btrfs-unstable.git] / tools / perf / builtin-inject.c
bloba3b346359ba00c406735d2fb7687bbc02b9db7fb
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * builtin-inject.c
4 *
5 * Builtin inject command: Examine the live mode (stdin) event stream
6 * and repipe it to stdout while optionally injecting additional
7 * events into it.
8 */
9 #include "builtin.h"
10
11 #include "perf.h"
12 #include "util/color.h"
13 #include "util/evlist.h"
14 #include "util/evsel.h"
15 #include "util/session.h"
16 #include "util/tool.h"
17 #include "util/debug.h"
18 #include "util/build-id.h"
19 #include "util/data.h"
20 #include "util/auxtrace.h"
21 #include "util/jit.h"
22 #include "util/thread.h"
23
24 #include <subcmd/parse-options.h>
25
26 #include <linux/list.h>
27 #include <errno.h>
28 #include <signal.h>
29
30 struct perf_inject {
31 struct perf_tool tool;
32 struct perf_session *session;
33 bool build_ids;
34 bool sched_stat;
35 bool have_auxtrace;
36 bool strip;
37 bool jit_mode;
38 const char *input_name;
39 struct perf_data output;
40 u64 bytes_written;
41 u64 aux_id;
42 struct list_head samples;
43 struct itrace_synth_opts itrace_synth_opts;
44 };
45
46 struct event_entry {
47 struct list_head node;
48 u32 tid;
49 union perf_event event[0];
50 };
51
52 static int output_bytes(struct perf_inject *inject, void *buf, size_t sz)
53 {
54 ssize_t size;
55
56 size = perf_data__write(&inject->output, buf, sz);
57 if (size < 0)
58 return -errno;
59
60 inject->bytes_written += size;
61 return 0;
62 }
63
64 static int perf_event__repipe_synth(struct perf_tool *tool,
65 union perf_event *event)
66 {
67 struct perf_inject *inject = container_of(tool, struct perf_inject,
68 tool);
69
70 return output_bytes(inject, event, event->header.size);
71 }
72
73 static int perf_event__repipe_oe_synth(struct perf_tool *tool,
74 union perf_event *event,
75 struct ordered_events *oe __maybe_unused)
76 {
77 return perf_event__repipe_synth(tool, event);
78 }
79
80 #ifdef HAVE_JITDUMP
81 static int perf_event__drop_oe(struct perf_tool *tool __maybe_unused,
82 union perf_event *event __maybe_unused,
83 struct ordered_events *oe __maybe_unused)
84 {
85 return 0;
86 }
87 #endif
88
89 static int perf_event__repipe_op2_synth(struct perf_tool *tool,
90 union perf_event *event,
91 struct perf_session *session
92 __maybe_unused)
93 {
94 return perf_event__repipe_synth(tool, event);
95 }
96
97 static int perf_event__repipe_attr(struct perf_tool *tool,
98 union perf_event *event,
99 struct perf_evlist **pevlist)
100 {
101 struct perf_inject *inject = container_of(tool, struct perf_inject,
102 tool);
103 int ret;
104
105 ret = perf_event__process_attr(tool, event, pevlist);
106 if (ret)
107 return ret;
108
109 if (!inject->output.is_pipe)
110 return 0;
111
112 return perf_event__repipe_synth(tool, event);
113 }
114
115 #ifdef HAVE_AUXTRACE_SUPPORT
116
117 static int copy_bytes(struct perf_inject *inject, int fd, off_t size)
118 {
119 char buf[4096];
120 ssize_t ssz;
121 int ret;
122
123 while (size > 0) {
124 ssz = read(fd, buf, min(size, (off_t)sizeof(buf)));
125 if (ssz < 0)
126 return -errno;
127 ret = output_bytes(inject, buf, ssz);
128 if (ret)
129 return ret;
130 size -= ssz;
131 }
132
133 return 0;
134 }
135
136 static s64 perf_event__repipe_auxtrace(struct perf_tool *tool,
137 union perf_event *event,
138 struct perf_session *session)
139 {
140 struct perf_inject *inject = container_of(tool, struct perf_inject,
141 tool);
142 int ret;
143
144 inject->have_auxtrace = true;
145
146 if (!inject->output.is_pipe) {
147 off_t offset;
148
149 offset = lseek(inject->output.file.fd, 0, SEEK_CUR);
150 if (offset == -1)
151 return -errno;
152 ret = auxtrace_index__auxtrace_event(&session->auxtrace_index,
153 event, offset);
154 if (ret < 0)
155 return ret;
156 }
157
158 if (perf_data__is_pipe(session->data) || !session->one_mmap) {
159 ret = output_bytes(inject, event, event->header.size);
160 if (ret < 0)
161 return ret;
162 ret = copy_bytes(inject, perf_data__fd(session->data),
163 event->auxtrace.size);
164 } else {
165 ret = output_bytes(inject, event,
166 event->header.size + event->auxtrace.size);
167 }
168 if (ret < 0)
169 return ret;
170
171 return event->auxtrace.size;
172 }
173
174 #else
175
176 static s64
177 perf_event__repipe_auxtrace(struct perf_tool *tool __maybe_unused,
178 union perf_event *event __maybe_unused,
179 struct perf_session *session __maybe_unused)
180 {
181 pr_err("AUX area tracing not supported\n");
182 return -EINVAL;
183 }
184
185 #endif
186
187 static int perf_event__repipe(struct perf_tool *tool,
188 union perf_event *event,
189 struct perf_sample *sample __maybe_unused,
190 struct machine *machine __maybe_unused)
191 {
192 return perf_event__repipe_synth(tool, event);
193 }
194
195 static int perf_event__drop(struct perf_tool *tool __maybe_unused,
196 union perf_event *event __maybe_unused,
197 struct perf_sample *sample __maybe_unused,
198 struct machine *machine __maybe_unused)
199 {
200 return 0;
201 }
202
203 static int perf_event__drop_aux(struct perf_tool *tool,
204 union perf_event *event __maybe_unused,
205 struct perf_sample *sample,
206 struct machine *machine __maybe_unused)
207 {
208 struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
209
210 if (!inject->aux_id)
211 inject->aux_id = sample->id;
212
213 return 0;
214 }
215
216 typedef int (*inject_handler)(struct perf_tool *tool,
217 union perf_event *event,
218 struct perf_sample *sample,
219 struct perf_evsel *evsel,
220 struct machine *machine);
221
222 static int perf_event__repipe_sample(struct perf_tool *tool,
223 union perf_event *event,
224 struct perf_sample *sample,
225 struct perf_evsel *evsel,
226 struct machine *machine)
227 {
228 if (evsel->handler) {
229 inject_handler f = evsel->handler;
230 return f(tool, event, sample, evsel, machine);
231 }
232
233 build_id__mark_dso_hit(tool, event, sample, evsel, machine);
234
235 return perf_event__repipe_synth(tool, event);
236 }
237
238 static int perf_event__repipe_mmap(struct perf_tool *tool,
239 union perf_event *event,
240 struct perf_sample *sample,
241 struct machine *machine)
242 {
243 int err;
244
245 err = perf_event__process_mmap(tool, event, sample, machine);
246 perf_event__repipe(tool, event, sample, machine);
247
248 return err;
249 }
250
251 #ifdef HAVE_JITDUMP
252 static int perf_event__jit_repipe_mmap(struct perf_tool *tool,
253 union perf_event *event,
254 struct perf_sample *sample,
255 struct machine *machine)
256 {
257 struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
258 u64 n = 0;
259 int ret;
260
261 /*
262 * if jit marker, then inject jit mmaps and generate ELF images
263 */
264 ret = jit_process(inject->session, &inject->output, machine,
265 event->mmap.filename, sample->pid, &n);
266 if (ret < 0)
267 return ret;
268 if (ret) {
269 inject->bytes_written += n;
270 return 0;
271 }
272 return perf_event__repipe_mmap(tool, event, sample, machine);
273 }
274 #endif
275
276 static int perf_event__repipe_mmap2(struct perf_tool *tool,
277 union perf_event *event,
278 struct perf_sample *sample,
279 struct machine *machine)
280 {
281 int err;
282
283 err = perf_event__process_mmap2(tool, event, sample, machine);
284 perf_event__repipe(tool, event, sample, machine);
285
286 return err;
287 }
288
289 #ifdef HAVE_JITDUMP
290 static int perf_event__jit_repipe_mmap2(struct perf_tool *tool,
291 union perf_event *event,
292 struct perf_sample *sample,
293 struct machine *machine)
294 {
295 struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
296 u64 n = 0;
297 int ret;
298
299 /*
300 * if jit marker, then inject jit mmaps and generate ELF images
301 */
302 ret = jit_process(inject->session, &inject->output, machine,
303 event->mmap2.filename, sample->pid, &n);
304 if (ret < 0)
305 return ret;
306 if (ret) {
307 inject->bytes_written += n;
308 return 0;
309 }
310 return perf_event__repipe_mmap2(tool, event, sample, machine);
311 }
312 #endif
313
314 static int perf_event__repipe_fork(struct perf_tool *tool,
315 union perf_event *event,
316 struct perf_sample *sample,
317 struct machine *machine)
318 {
319 int err;
320
321 err = perf_event__process_fork(tool, event, sample, machine);
322 perf_event__repipe(tool, event, sample, machine);
323
324 return err;
325 }
326
327 static int perf_event__repipe_comm(struct perf_tool *tool,
328 union perf_event *event,
329 struct perf_sample *sample,
330 struct machine *machine)
331 {
332 int err;
333
334 err = perf_event__process_comm(tool, event, sample, machine);
335 perf_event__repipe(tool, event, sample, machine);
336
337 return err;
338 }
339
340 static int perf_event__repipe_namespaces(struct perf_tool *tool,
341 union perf_event *event,
342 struct perf_sample *sample,
343 struct machine *machine)
344 {
345 int err = perf_event__process_namespaces(tool, event, sample, machine);
346
347 perf_event__repipe(tool, event, sample, machine);
348
349 return err;
350 }
351
352 static int perf_event__repipe_exit(struct perf_tool *tool,
353 union perf_event *event,
354 struct perf_sample *sample,
355 struct machine *machine)
356 {
357 int err;
358
359 err = perf_event__process_exit(tool, event, sample, machine);
360 perf_event__repipe(tool, event, sample, machine);
361
362 return err;
363 }
364
365 static int perf_event__repipe_tracing_data(struct perf_tool *tool,
366 union perf_event *event,
367 struct perf_session *session)
368 {
369 int err;
370
371 perf_event__repipe_synth(tool, event);
372 err = perf_event__process_tracing_data(tool, event, session);
373
374 return err;
375 }
376
377 static int perf_event__repipe_id_index(struct perf_tool *tool,
378 union perf_event *event,
379 struct perf_session *session)
380 {
381 int err;
382
383 perf_event__repipe_synth(tool, event);
384 err = perf_event__process_id_index(tool, event, session);
385
386 return err;
387 }
388
389 static int dso__read_build_id(struct dso *dso)
390 {
391 if (dso->has_build_id)
392 return 0;
393
394 if (filename__read_build_id(dso->long_name, dso->build_id,
395 sizeof(dso->build_id)) > 0) {
396 dso->has_build_id = true;
397 return 0;
398 }
399
400 return -1;
401 }
402
403 static int dso__inject_build_id(struct dso *dso, struct perf_tool *tool,
404 struct machine *machine)
405 {
406 u16 misc = PERF_RECORD_MISC_USER;
407 int err;
408
409 if (dso__read_build_id(dso) < 0) {
410 pr_debug("no build_id found for %s\n", dso->long_name);
411 return -1;
412 }
413
414 if (dso->kernel)
415 misc = PERF_RECORD_MISC_KERNEL;
416
417 err = perf_event__synthesize_build_id(tool, dso, misc, perf_event__repipe,
418 machine);
419 if (err) {
420 pr_err("Can't synthesize build_id event for %s\n", dso->long_name);
421 return -1;
422 }
423
424 return 0;
425 }
426
427 static int perf_event__inject_buildid(struct perf_tool *tool,
428 union perf_event *event,
429 struct perf_sample *sample,
430 struct perf_evsel *evsel __maybe_unused,
431 struct machine *machine)
432 {
433 struct addr_location al;
434 struct thread *thread;
435
436 thread = machine__findnew_thread(machine, sample->pid, sample->tid);
437 if (thread == NULL) {
438 pr_err("problem processing %d event, skipping it.\n",
439 event->header.type);
440 goto repipe;
441 }
442
443 if (thread__find_map(thread, sample->cpumode, sample->ip, &al)) {
444 if (!al.map->dso->hit) {
445 al.map->dso->hit = 1;
446 if (map__load(al.map) >= 0) {
447 dso__inject_build_id(al.map->dso, tool, machine);
448 /*
449 * If this fails, too bad, let the other side
450 * account this as unresolved.
451 */
452 } else {
453 #ifdef HAVE_LIBELF_SUPPORT
454 pr_warning("no symbols found in %s, maybe "
455 "install a debug package?\n",
456 al.map->dso->long_name);
457 #endif
458 }
459 }
460 }
461
462 thread__put(thread);
463 repipe:
464 perf_event__repipe(tool, event, sample, machine);
465 return 0;
466 }
467
468 static int perf_inject__sched_process_exit(struct perf_tool *tool,
469 union perf_event *event __maybe_unused,
470 struct perf_sample *sample,
471 struct perf_evsel *evsel __maybe_unused,
472 struct machine *machine __maybe_unused)
473 {
474 struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
475 struct event_entry *ent;
476
477 list_for_each_entry(ent, &inject->samples, node) {
478 if (sample->tid == ent->tid) {
479 list_del_init(&ent->node);
480 free(ent);
481 break;
482 }
483 }
484
485 return 0;
486 }
487
488 static int perf_inject__sched_switch(struct perf_tool *tool,
489 union perf_event *event,
490 struct perf_sample *sample,
491 struct perf_evsel *evsel,
492 struct machine *machine)
493 {
494 struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
495 struct event_entry *ent;
496
497 perf_inject__sched_process_exit(tool, event, sample, evsel, machine);
498
499 ent = malloc(event->header.size + sizeof(struct event_entry));
500 if (ent == NULL) {
501 color_fprintf(stderr, PERF_COLOR_RED,
502 "Not enough memory to process sched switch event!");
503 return -1;
504 }
505
506 ent->tid = sample->tid;
507 memcpy(&ent->event, event, event->header.size);
508 list_add(&ent->node, &inject->samples);
509 return 0;
510 }
511
512 static int perf_inject__sched_stat(struct perf_tool *tool,
513 union perf_event *event __maybe_unused,
514 struct perf_sample *sample,
515 struct perf_evsel *evsel,
516 struct machine *machine)
517 {
518 struct event_entry *ent;
519 union perf_event *event_sw;
520 struct perf_sample sample_sw;
521 struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
522 u32 pid = perf_evsel__intval(evsel, sample, "pid");
523
524 list_for_each_entry(ent, &inject->samples, node) {
525 if (pid == ent->tid)
526 goto found;
527 }
528
529 return 0;
530 found:
531 event_sw = &ent->event[0];
532 perf_evsel__parse_sample(evsel, event_sw, &sample_sw);
533
534 sample_sw.period = sample->period;
535 sample_sw.time = sample->time;
536 perf_event__synthesize_sample(event_sw, evsel->attr.sample_type,
537 evsel->attr.read_format, &sample_sw);
538 build_id__mark_dso_hit(tool, event_sw, &sample_sw, evsel, machine);
539 return perf_event__repipe(tool, event_sw, &sample_sw, machine);
540 }
541
542 static void sig_handler(int sig __maybe_unused)
543 {
544 session_done = 1;
545 }
546
547 static int perf_evsel__check_stype(struct perf_evsel *evsel,
548 u64 sample_type, const char *sample_msg)
549 {
550 struct perf_event_attr *attr = &evsel->attr;
551 const char *name = perf_evsel__name(evsel);
552
553 if (!(attr->sample_type & sample_type)) {
554 pr_err("Samples for %s event do not have %s attribute set.",
555 name, sample_msg);
556 return -EINVAL;
557 }
558
559 return 0;
560 }
561
562 static int drop_sample(struct perf_tool *tool __maybe_unused,
563 union perf_event *event __maybe_unused,
564 struct perf_sample *sample __maybe_unused,
565 struct perf_evsel *evsel __maybe_unused,
566 struct machine *machine __maybe_unused)
567 {
568 return 0;
569 }
570
571 static void strip_init(struct perf_inject *inject)
572 {
573 struct perf_evlist *evlist = inject->session->evlist;
574 struct perf_evsel *evsel;
575
576 inject->tool.context_switch = perf_event__drop;
577
578 evlist__for_each_entry(evlist, evsel)
579 evsel->handler = drop_sample;
580 }
581
582 static bool has_tracking(struct perf_evsel *evsel)
583 {
584 return evsel->attr.mmap || evsel->attr.mmap2 || evsel->attr.comm ||
585 evsel->attr.task;
586 }
587
588 #define COMPAT_MASK (PERF_SAMPLE_ID | PERF_SAMPLE_TID | PERF_SAMPLE_TIME | \
589 PERF_SAMPLE_ID | PERF_SAMPLE_CPU | PERF_SAMPLE_IDENTIFIER)
590
591 /*
592 * In order that the perf.data file is parsable, tracking events like MMAP need
593 * their selected event to exist, except if there is only 1 selected event left
594 * and it has a compatible sample type.
595 */
596 static bool ok_to_remove(struct perf_evlist *evlist,
597 struct perf_evsel *evsel_to_remove)
598 {
599 struct perf_evsel *evsel;
600 int cnt = 0;
601 bool ok = false;
602
603 if (!has_tracking(evsel_to_remove))
604 return true;
605
606 evlist__for_each_entry(evlist, evsel) {
607 if (evsel->handler != drop_sample) {
608 cnt += 1;
609 if ((evsel->attr.sample_type & COMPAT_MASK) ==
610 (evsel_to_remove->attr.sample_type & COMPAT_MASK))
611 ok = true;
612 }
613 }
614
615 return ok && cnt == 1;
616 }
617
618 static void strip_fini(struct perf_inject *inject)
619 {
620 struct perf_evlist *evlist = inject->session->evlist;
621 struct perf_evsel *evsel, *tmp;
622
623 /* Remove non-synthesized evsels if possible */
624 evlist__for_each_entry_safe(evlist, tmp, evsel) {
625 if (evsel->handler == drop_sample &&
626 ok_to_remove(evlist, evsel)) {
627 pr_debug("Deleting %s\n", perf_evsel__name(evsel));
628 perf_evlist__remove(evlist, evsel);
629 perf_evsel__delete(evsel);
630 }
631 }
632 }
633
634 static int __cmd_inject(struct perf_inject *inject)
635 {
636 int ret = -EINVAL;
637 struct perf_session *session = inject->session;
638 struct perf_data *data_out = &inject->output;
639 int fd = perf_data__fd(data_out);
640 u64 output_data_offset;
641
642 signal(SIGINT, sig_handler);
643
644 if (inject->build_ids || inject->sched_stat ||
645 inject->itrace_synth_opts.set) {
646 inject->tool.mmap = perf_event__repipe_mmap;
647 inject->tool.mmap2 = perf_event__repipe_mmap2;
648 inject->tool.fork = perf_event__repipe_fork;
649 inject->tool.tracing_data = perf_event__repipe_tracing_data;
650 }
651
652 output_data_offset = session->header.data_offset;
653
654 if (inject->build_ids) {
655 inject->tool.sample = perf_event__inject_buildid;
656 } else if (inject->sched_stat) {
657 struct perf_evsel *evsel;
658
659 evlist__for_each_entry(session->evlist, evsel) {
660 const char *name = perf_evsel__name(evsel);
661
662 if (!strcmp(name, "sched:sched_switch")) {
663 if (perf_evsel__check_stype(evsel, PERF_SAMPLE_TID, "TID"))
664 return -EINVAL;
665
666 evsel->handler = perf_inject__sched_switch;
667 } else if (!strcmp(name, "sched:sched_process_exit"))
668 evsel->handler = perf_inject__sched_process_exit;
669 else if (!strncmp(name, "sched:sched_stat_", 17))
670 evsel->handler = perf_inject__sched_stat;
671 }
672 } else if (inject->itrace_synth_opts.set) {
673 session->itrace_synth_opts = &inject->itrace_synth_opts;
674 inject->itrace_synth_opts.inject = true;
675 inject->tool.comm = perf_event__repipe_comm;
676 inject->tool.namespaces = perf_event__repipe_namespaces;
677 inject->tool.exit = perf_event__repipe_exit;
678 inject->tool.id_index = perf_event__repipe_id_index;
679 inject->tool.auxtrace_info = perf_event__process_auxtrace_info;
680 inject->tool.auxtrace = perf_event__process_auxtrace;
681 inject->tool.aux = perf_event__drop_aux;
682 inject->tool.itrace_start = perf_event__drop_aux,
683 inject->tool.ordered_events = true;
684 inject->tool.ordering_requires_timestamps = true;
685 /* Allow space in the header for new attributes */
686 output_data_offset = 4096;
687 if (inject->strip)
688 strip_init(inject);
689 }
690
691 if (!inject->itrace_synth_opts.set)
692 auxtrace_index__free(&session->auxtrace_index);
693
694 if (!data_out->is_pipe)
695 lseek(fd, output_data_offset, SEEK_SET);
696
697 ret = perf_session__process_events(session);
698 if (ret)
699 return ret;
700
701 if (!data_out->is_pipe) {
702 if (inject->build_ids)
703 perf_header__set_feat(&session->header,
704 HEADER_BUILD_ID);
705 /*
706 * Keep all buildids when there is unprocessed AUX data because
707 * it is not known which ones the AUX trace hits.
708 */
709 if (perf_header__has_feat(&session->header, HEADER_BUILD_ID) &&
710 inject->have_auxtrace && !inject->itrace_synth_opts.set)
711 dsos__hit_all(session);
712 /*
713 * The AUX areas have been removed and replaced with
714 * synthesized hardware events, so clear the feature flag and
715 * remove the evsel.
716 */
717 if (inject->itrace_synth_opts.set) {
718 struct perf_evsel *evsel;
719
720 perf_header__clear_feat(&session->header,
721 HEADER_AUXTRACE);
722 if (inject->itrace_synth_opts.last_branch)
723 perf_header__set_feat(&session->header,
724 HEADER_BRANCH_STACK);
725 evsel = perf_evlist__id2evsel_strict(session->evlist,
726 inject->aux_id);
727 if (evsel) {
728 pr_debug("Deleting %s\n",
729 perf_evsel__name(evsel));
730 perf_evlist__remove(session->evlist, evsel);
731 perf_evsel__delete(evsel);
732 }
733 if (inject->strip)
734 strip_fini(inject);
735 }
736 session->header.data_offset = output_data_offset;
737 session->header.data_size = inject->bytes_written;
738 perf_session__write_header(session, session->evlist, fd, true);
739 }
740
741 return ret;
742 }
743
744 int cmd_inject(int argc, const char **argv)
745 {
746 struct perf_inject inject = {
747 .tool = {
748 .sample = perf_event__repipe_sample,
749 .mmap = perf_event__repipe,
750 .mmap2 = perf_event__repipe,
751 .comm = perf_event__repipe,
752 .fork = perf_event__repipe,
753 .exit = perf_event__repipe,
754 .lost = perf_event__repipe,
755 .lost_samples = perf_event__repipe,
756 .aux = perf_event__repipe,
757 .itrace_start = perf_event__repipe,
758 .context_switch = perf_event__repipe,
759 .read = perf_event__repipe_sample,
760 .throttle = perf_event__repipe,
761 .unthrottle = perf_event__repipe,
762 .attr = perf_event__repipe_attr,
763 .tracing_data = perf_event__repipe_op2_synth,
764 .auxtrace_info = perf_event__repipe_op2_synth,
765 .auxtrace = perf_event__repipe_auxtrace,
766 .auxtrace_error = perf_event__repipe_op2_synth,
767 .time_conv = perf_event__repipe_op2_synth,
768 .finished_round = perf_event__repipe_oe_synth,
769 .build_id = perf_event__repipe_op2_synth,
770 .id_index = perf_event__repipe_op2_synth,
771 .feature = perf_event__repipe_op2_synth,
772 },
773 .input_name = "-",
774 .samples = LIST_HEAD_INIT(inject.samples),
775 .output = {
776 .file = {
777 .path = "-",
778 },
779 .mode = PERF_DATA_MODE_WRITE,
780 },
781 };
782 struct perf_data data = {
783 .mode = PERF_DATA_MODE_READ,
784 };
785 int ret;
786
787 struct option options[] = {
788 OPT_BOOLEAN('b', "build-ids", &inject.build_ids,
789 "Inject build-ids into the output stream"),
790 OPT_STRING('i', "input", &inject.input_name, "file",
791 "input file name"),
792 OPT_STRING('o', "output", &inject.output.file.path, "file",
793 "output file name"),
794 OPT_BOOLEAN('s', "sched-stat", &inject.sched_stat,
795 "Merge sched-stat and sched-switch for getting events "
796 "where and how long tasks slept"),
797 #ifdef HAVE_JITDUMP
798 OPT_BOOLEAN('j', "jit", &inject.jit_mode, "merge jitdump files into perf.data file"),
799 #endif
800 OPT_INCR('v', "verbose", &verbose,
801 "be more verbose (show build ids, etc)"),
802 OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name, "file",
803 "kallsyms pathname"),
804 OPT_BOOLEAN('f', "force", &data.force, "don't complain, do it"),
805 OPT_CALLBACK_OPTARG(0, "itrace", &inject.itrace_synth_opts,
806 NULL, "opts", "Instruction Tracing options",
807 itrace_parse_synth_opts),
808 OPT_BOOLEAN(0, "strip", &inject.strip,
809 "strip non-synthesized events (use with --itrace)"),
810 OPT_END()
811 };
812 const char * const inject_usage[] = {
813 "perf inject [<options>]",
814 NULL
815 };
816 #ifndef HAVE_JITDUMP
817 set_option_nobuild(options, 'j', "jit", "NO_LIBELF=1", true);
818 #endif
819 argc = parse_options(argc, argv, options, inject_usage, 0);
820
821 /*
822 * Any (unrecognized) arguments left?
823 */
824 if (argc)
825 usage_with_options(inject_usage, options);
826
827 if (inject.strip && !inject.itrace_synth_opts.set) {
828 pr_err("--strip option requires --itrace option\n");
829 return -1;
830 }
831
832 if (perf_data__open(&inject.output)) {
833 perror("failed to create output file");
834 return -1;
835 }
836
837 inject.tool.ordered_events = inject.sched_stat;
838
839 data.file.path = inject.input_name;
840 inject.session = perf_session__new(&data, true, &inject.tool);
841 if (inject.session == NULL)
842 return -1;
843
844 if (inject.build_ids) {
845 /*
846 * to make sure the mmap records are ordered correctly
847 * and so that the correct especially due to jitted code
848 * mmaps. We cannot generate the buildid hit list and
849 * inject the jit mmaps at the same time for now.
850 */
851 inject.tool.ordered_events = true;
852 inject.tool.ordering_requires_timestamps = true;
853 }
854 #ifdef HAVE_JITDUMP
855 if (inject.jit_mode) {
856 inject.tool.mmap2 = perf_event__jit_repipe_mmap2;
857 inject.tool.mmap = perf_event__jit_repipe_mmap;
858 inject.tool.ordered_events = true;
859 inject.tool.ordering_requires_timestamps = true;
860 /*
861 * JIT MMAP injection injects all MMAP events in one go, so it
862 * does not obey finished_round semantics.
863 */
864 inject.tool.finished_round = perf_event__drop_oe;
865 }
866 #endif
867 ret = symbol__init(&inject.session->header.env);
868 if (ret < 0)
869 goto out_delete;
870
871 ret = __cmd_inject(&inject);
872
873 out_delete:
874 perf_session__delete(inject.session);
875 return ret;
876 }
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